符合標準EN55022 - B類標準意法半導體公司的EVLVIP17 - 5WCHG是5W開關電源（SMPS）設計，采用意法半導體公司的VIPER17HN，具有低待機功耗的特性，主要用作旅行電池充電器，如手機，掌上電腦和電子游戲的電池充電。充電器的輸(shu)(shu)入電壓為90 - 264Vac，頻率45 - 66Hz，輸(shu)(shu)出電壓5.1伏直流(liu)± 2％，輸(shu)(shu)出電流(liu)1 ± 5％，電纜(lan)壓降補(bu)償（0.2V的/甲），無負載(zai)在高火線電壓的輸(shu)(shu)入功率低于100兆瓦(wa)，短(duan)路(lu)保護，并在短(duan)路(lu)故障消除后自(zi)動(dong)重起，印刷電路(lu)板(ban)尺(chi)寸為53 × 26毫米，安全特(te)性和EN60065兼容，電磁干擾滿足標(biao)準EN5022 - B類標(biao)準。

     本文介紹了EVLVIP17 - 5WCHG主要特性，電路板外形圖以及詳細電路圖和所用材料清單（BOM）的。 EVLVIP17 - 5WCHG：5瓦的低待機功耗電池充電器演示板的基礎上VIPER17HN的EVLVIP17 - 5WCHG演示板是一個5瓦的作為，如移動電話，掌上電腦和電子游戲應用旅行使用開關電源。該(gai)委(wei)員會(hui)(hui)的(de)(de)(de)(de)(de)目的(de)(de)(de)(de)(de)是(shi)證明該(gai)VIPER17HN離(li)線高電(dian)(dian)(dian)壓轉(zhuan)(zhuan)換(huan)器的(de)(de)(de)(de)(de)性能。其低(di)功耗和其他特性，由(you)于良好的(de)(de)(de)(de)(de)電(dian)(dian)(dian)氣性能實現。為了(le)獲得恒定的(de)(de)(de)(de)(de)輸出電(dian)(dian)(dian)壓和電(dian)(dian)(dian)流調節（簡歷(li)/消(xiao)委(wei)會(hui)(hui)），TSM1052簡歷(li)/消(xiao)委(wei)會(hui)(hui)控(kong)制(zhi)器上使用(yong)的(de)(de)(de)(de)(de)次(ci)要方面。這TSM1052是(shi)非(fei)常適合這種類型(xing)的(de)(de)(de)(de)(de)應用(yong)，提(ti)供了(le)一(yi)個非(fei)常小的(de)(de)(de)(de)(de)封(feng)裝非(fei)常低(di)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)流消(xiao)耗（采用(yong)SOT23 - 6L）。該(gai)轉(zhuan)(zhuan)換(huan)器實現了(le)一(yi)個反(fan)激(ji)拓撲結構(gou)，這是(shi)理想的(de)(de)(de)(de)(de)低(di)功耗，低(di)成本的(de)(de)(de)(de)(de)隔(ge)離(li)轉(zhuan)(zhuan)換(huan)器。在(zai)小學方面，VIPER17HN使用(yong)。該(gai)IC是(shi)毒蛇的(de)(de)(de)(de)(de)+家族，從(cong)它的(de)(de)(de)(de)(de)附加(jia)功能和保(bao)護(hu)的(de)(de)(de)(de)(de)利益(yi)。此設備，設計采用(yong)了(le)一(yi)個多(duo)芯片方案，包括一(yi)個先(xian)進的(de)(de)(de)(de)(de)電(dian)(dian)(dian)流模式PWM控(kong)制(zhi)器和雪崩(beng)的(de)(de)(de)(de)(de)小幅下降(jiang)，7封(feng)裝堅固800 V的(de)(de)(de)(de)(de)功率MOSFET。該(gai)轉(zhuan)(zhuan)換(huan)器在(zai)連續和非(fei)連續導電(dian)(dian)(dian)模式工程取決于輸入(ru)電(dian)(dian)(dian)壓（電(dian)(dian)(dian)路有一(yi)個范(fan)圍廣闊的(de)(de)(de)(de)(de)輸入(ru)）和輸出負(fu)載。

     該控制器(qi)(qi)后綴為“H”規(gui)定(ding)，開關頻率(lv)是115千赫(he)，內(nei)部固定(ding)的，允許的功率(lv)元(yuan)件減少(shao)。應(ying)用(yong)程序(xu)設計，以(yi)降低整(zheng)體元(yuan)件數量和(he)適配器(qi)(qi)的成本。輸入部分包括(kuo)一個浪涌電(dian)流限制和(he)故障(zhang)保護，arectifier橋，兩條電(dian)解電(dian)容和(he)大量作(zuo)為前電(dian)感熔斷電(dian)阻器(qi)(qi)高(gao)端AC - DC轉換器(qi)(qi)和(he)EMC濾(lv)波器(qi)(qi)。

    變壓(ya)(ya)器(qi)是(shi)一個(ge)層類型(xing)，利用一個(ge)標(biao)準的(de)(de)EF12.6鐵氧體(ti)磁芯(xin)，并與大約75 V電(dian)壓(ya)(ya)設計的(de)(de)反(fan)映(ying)。這個(ge)特點是(shi)變壓(ya)(ya)器(qi)繞組的(de)(de)技術，消(xiao)除(chu)了常用的(de)(de)?1安全(quan)電(dian)容器(qi)的(de)(de)需要(yao)(yao)之間的(de)(de)主要(yao)(yao)和次要(yao)(yao)方面。一個(ge)RCD鉗位網絡用于漏(lou)感消(xiao)磁。該電(dian)路的(de)(de)啟動(dong)是(shi)由內部管理，高(gao)壓(ya)(ya)的(de)(de)VIPER17HN啟動(dong)發電(dian)機(ji)。這條(tiao)賽(sai)道(dao)的(de)(de)典型(xing)匯3電(dian)流(liu)從漏(lou)極引(yin)腳和收(shou)費內徑電(dian)容。這個(ge)電(dian)流(liu)值減(jian)(jian)少(shao)到0.6毫安在(zai)有保障(zhang)的(de)(de)干預，以提高(gao)試用期重(zhong)新(xin)啟動(dong)，從而減(jian)(jian)少(shao)對永久性故障(zhang)的(de)(de)情(qing)況(kuang)下，功率器(qi)件的(de)(de)壓(ya)(ya)力(li)。為(wei)VIPER17HN電(dian)源獲得自我供(gong)(gong)(gong)應(ying)從一激配置連(lian)接的(de)(de)變壓(ya)(ya)器(qi)繞組。該電(dian)路提供(gong)(gong)(gong)電(dian)壓(ya)(ya)，理想情(qing)況(kuang)下，直接成比例(li)的(de)(de)輸(shu)出電(dian)壓(ya)(ya)。在(zai)實踐中，因為(wei)這是(shi)沒有Y型(xing)帽變壓(ya)(ya)器(qi)有很(hen)高(gao)的(de)(de)漏(lou)感，作為(wei)峰值初級電(dian)流(liu)增(zeng)(zeng)大selfsupply電(dian)壓(ya)(ya)的(de)(de)增(zeng)(zeng)加。無論如何(he)，由于廣泛內徑的(de)(de)VIPER17HN電(dian)壓(ya)(ya)范圍(wei)的(de)(de)情(qing)況(kuang)（從8.5 V至23五）正確的(de)(de)供(gong)(gong)(gong)應(ying)總是(shi)提供(gong)(gong)(gong)。內部MOSFET的(de)(de)電(dian)流(liu)限制降低（從0.4的(de)(de)面值）通過使(shi)用電(dian)阻R16連(lian)接到續針(zhen)。

     有(you)(you)了這個功(gong)(gong)能(neng)(neng)，IDlim定(ding)為280毫安，允許(xu)使(shi)(shi)(shi)用(yong)小型變壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)5 W輸(shu)(shu)(shu)出（EF12.6使(shi)(shi)(shi)用(yong)）在(zai)不(bu)飽和(he)(he)的(de)(de)(de)風險。分(fen)壓(ya)(ya)(ya)(ya)(ya)器(qi)(qi)的(de)(de)(de)節電(dian)(dian)(dian)(dian)(dian)沒有(you)(you)安裝（所以禁用(yong)此功(gong)(gong)能(neng)(neng)），以節省電(dian)(dian)(dian)(dian)(dian)能(neng)(neng)特別(bie)是空(kong)載功(gong)(gong)耗。該VIPER17HN有(you)(you)幾個內置的(de)(de)(de)功(gong)(gong)能(neng)(neng)，如(ru)(ru)抖動(dong)(dong)，以減(jian)少電(dian)(dian)(dian)(dian)(dian)磁干擾的(de)(de)(de)問(wen)題，軟啟動(dong)(dong)頻率，和(he)(he)突發(fa)的(de)(de)(de)低功(gong)(gong)耗模(mo)式(shi)工作在(zai)輕負(fu)載和(he)(he)無負(fu)載條件下。過流(liu)，過載和(he)(he)過溫(wen)保護也是在(zai)內部實施，并保證(zheng)董(dong)事會的(de)(de)(de)安全運行(xing)。在(zai)中學方面(mian)，TSM1052恒壓(ya)(ya)(ya)(ya)(ya)恒電(dian)(dian)(dian)(dian)(dian)流(liu)（CV / CC）的(de)(de)(de)控(kong)制器(qi)(qi)使(shi)(shi)(shi)用(yong)。在(zai)TSM1052和(he)(he)光電(dian)(dian)(dian)(dian)(dian)二極管的(de)(de)(de)光電(dian)(dian)(dian)(dian)(dian)耦(ou)合器(qi)(qi)是直接供應(ying)(ying)的(de)(de)(de)輸(shu)(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)。其(qi)電(dian)(dian)(dian)(dian)(dian)源的(de)(de)(de)TSM1052（為1.7 V分(fen)鐘）電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)范圍內進行(xing)精確的(de)(de)(de)恒定(ding)電(dian)(dian)(dian)(dian)(dian)流(liu)調(diao)節，即使(shi)(shi)(shi)輸(shu)(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)降(jiang)至1.5伏特，1.6五，此范圍通常為所有(you)(you)電(dian)(dian)(dian)(dian)(dian)池充電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)應(ying)(ying)用(yong)不(bu)夠。當輸(shu)(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)低于(yu)(yu)這一限制電(dian)(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)監(jian)管，屬于(yu)(yu)損失，保護了口(kou)腔(qiang)扁平(ping)苔蘚調(diao)用(yong)和(he)(he)系(xi)統始于(yu)(yu)呃(e)逆模(mo)式(shi)下工作。如(ru)(ru)果由于(yu)(yu)某種(zhong)原因，目前監(jian)管的(de)(de)(de)需(xu)要到(dao)零(ling)輸(shu)(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)水平(ping)（即短路(lu)），它是足夠提供TSM1052和(he)(he)帶(dai)有(you)(you)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)等于(yu)(yu)輸(shu)(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)總和(he)(he)，從(cong)TR1C電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)二極管纏繞在(zai)前進的(de)(de)(de)方式(shi)糾正。有(you)(you)關這一具體原理圖，請使(shi)(shi)(shi)用(yong)TSM1052見應(ying)(ying)用(yong)筆(bi)記AN2448（超小型電(dian)(dian)(dian)(dian)(dian)池充電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)更多信息）。

     R7的(de)電(dian)(dian)(dian)(dian)阻器被(bei)添加到提供(gong)(gong)電(dian)(dian)(dian)(dian)纜(lan)壓降補償。較高(gao)的(de)輸出電(dian)(dian)(dian)(dian)流，輸出電(dian)(dian)(dian)(dian)壓越高(gao)，對電(dian)(dian)(dian)(dian)路板(ban)的(de)輸出端測量(liang)。這(zhe)樣，對電(dian)(dian)(dian)(dian)纜(lan)連接的(de)單(dan)位(wei)負(fu)(fu)載電(dian)(dian)(dian)(dian)壓降得到補償，同(tong)時(shi)提供(gong)(gong)給負(fu)(fu)載的(de)電(dian)(dian)(dian)(dian)壓基本不變。更多(duo)的(de)細節，因(yin)為(wei)r7同(tong)樣等于九號，輸出電(dian)(dian)(dian)(dian)壓為(wei)增加0.2毫安(an)的(de)輸出電(dian)(dian)(dian)(dian)流壓。這(zhe)一數(shu)額的(de)基礎上選擇為(wei)這(zhe)些應用程序（通常約為(wei)0.2-0.3Ω）典型(xing)的(de)電(dian)(dian)(dian)(dian)纜(lan)電(dian)(dian)(dian)(dian)阻。